mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add missing bit for SSE instr in VEX decoding

Browse Source 
The 2-byte VEX prefix imples a leading 0Fh opcode byte.

Signed-off-by: Eugene Minibaev <mail@kitsu.me>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Eugene Minibaev 2018-04-06 16:41:52 +03:00 committed by Paolo Bonzini
parent 3bd2608db7
commit e0014d4b3a
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
target/i386/translate.c
View File

@ -4563,9 +4563,11 @@ static target_ulong disas_insn(DisasContext *s, CPUState *cpu)
#endif
rex_r = (~vex2 >> 4) & 8;
if (b == 0xc5) {
/* 2-byte VEX prefix: RVVVVlpp, implied 0f leading opcode byte */
vex3 = vex2;
b = x86_ldub_code(env, s);
b = x86_ldub_code(env, s) | 0x100;
} else {
/* 3-byte VEX prefix: RXBmmmmm wVVVVlpp */
#ifdef TARGET_X86_64
s->rex_x = (~vex2 >> 3) & 8;
s->rex_b = (~vex2 >> 2) & 8;